A preparation methods of grape seed oil and extract with high quality

摘要

A method for preparing high-quality grape seed oil is provided to obtain grape seed oil functioning as a health-aid food for preventing cancers, cardiac diseases, hypertension and aging, and as an active ingredient for cosmetic and pharmaceutical products. The method for preparing high-quality grape seed oil comprises the steps of: crushing dry grape seeds; treating the grape seeds with microwaves; defatting the grape seeds with n-hexane to obtain crude grape seed oil; degumming the crude grape seed oil with 0.15% phosphoric acid; deacidifying the grape seed oil with 5% NaOH solution; and deodorizing the oil via distillation with water steam at 220 deg.C under 5 mmHg for 2 hours to provide high-quality grape seed oil.